Honestly, having a dipstick and an electrical sensor seems logical. I owned an N52 for 6 years and really the only time I wish I had it was after oil changes. Although, due to the lack of dipstick I was always worried and pretty much checked my oil level every drive. I do also recall reading that the sensor cuts out at 186k miles or 300k kilometers but I wasn't sure if it was true. I only hit 122 before it was totaled
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